The movement of river water can be used to generate electricity. Electricity can be generated by using water stored behind a dam in a reservoir or by using the natural movement of a river.

Hydropower is non polluting and relatively inexpensive, but dams can alter ecosystems and disrupt people's lives

The movement of tides and ocean thermal energy can be used to generate electricity. Harnessing tidal energy works best where there is a large difference between the height of water at low and high tides.

Ocean thermal energy conversions is a process that converts thermal energy in ocean water to electrical energy

Solar and Wind Energy

The suns energy can be used to heat buildings and generate electricity

Solar power has many benefits, such as its limitless supply, but it depends on the weather and it is expensive

Wind turbines convert wind's kinetic energy to electricity.

Wind Power is non polluting and effiecent but its supply is unpredictable, and it may damage landscape and wildlife